The 100X Slide-A-Round Elementary Math Manipulative provides students with a visual hands-on manipulative to address the common core math standards of rounding and estimating. It provides students with the opportunity to work with a series of movable slides to solve standardized testing word problems with numbers in the 10s and 100s. In addition to an included handout of practice standardized testing word problems that are addressed with the individual manipulative, each individual Slide-A-Round manipulative focuses on a specific rounding math standard from 10 to 10,000,000 as well equivalent fractions in 12ths and 16ths, money, elapsed time, weight, and decimals. The 10 1/2 inch manipulatives are constructed of mold-created, poured plastic with a steel-reinforced piece added for durability. More information about my products and background as an elementary math teacher still in the classroom are available at www.slidearoundmath.com.